Door construction



Feb. 16, 1932. v, DAVDSON 1,845,743

DOOR CONSTRUCTION Filed D86. 11, 1930 I N VEN TOR. Dav/ sou BY W ATTOR EY.

' vision of a construction Patented Feb. 16, 1932 PATENT OFFICE VERNA E. DAVIDSON, OF DETROIT, MICHIGAN DOOR CONSTRUCTION Application filed December 11, 1830. Serial No. 501,541.

My invention relates to a new and useful improvement in a door construction adapted for use in closing the entries to rooms, passages, etc, and particularly adapted for use in banking houses and similar institutions where large sums of monies and negotiable securities are kept and access to which is through compartments or passages.

It is an object of the present invention to provide a door gate or closure for passages and entry ways which will preventthe passage of persons through the entry way in excess of a predetermined number.

It is another object of the present invention to provide a construction whereby the employee, when once he has passed through the entry way, will be protected from intrusion by others.

It is another object of the present invention to provide a construction whereby upon the excessive use or swinging of the closure, the closure may be locked against further movement and an alarm sounded.

Another object of the invention is the proof this class which will be simple in structure, economical of manufacture, and highly eflicient in use.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanyin drawings which form a part of this specification, and

' in which,

Fig. 1 is a top plan view of the invention with parts broken away and parts shown in section.

Fig. 2 is a fragmentary vertical sectional view of the invention.

Fig. 3 is a fragmentary top plan view of the invention with parts broken away and parts shown in section.

Fig. 4 is a fragmentary sectional view taken on line 4-4 of Fig. 3.

In the drawings, I have illustrated the invention as comprising a swingable closure having the spaced walls or closing sides 7 and 8 which extend angularly to each other and are connected at their top by the roof or cover 9, this swingable closure being pivotally mounted on the axis 10 and serving to eifect a closure of the entry way extending between the partitions or walls 11 and 12. (lo-operating with the swingable closure is a compartment or cage forming structure having the side walls 13 and 15 and the rear wall 14 and provided with the cover or roof 22 which is positioned a shown in Fig. 4 above the cover or roof 9.

Projecting upwardly from the cover 9 is a pin 16 on which is pivotally mounted a dog 17 held by the leaf s ring 18 in engagement with the teeth forme on the inner face of the arcuate locking bar 19 which is slidably mounted in the guide 20 and adapted for movement into the guide sleeve 21 which is mounted on the cover or roof 9. The cover or roof 22 is provided with the swingable lid 23 on which is swingably mounted a dog 24, the rocking of which in one direction is resisted by the stop pin 25. A spring 26 serves to normally retain the dog 24 in engagement with the back face of the arcuate locking bar 19.

The pin 16 is adapted to engage in an elongated slot 27 formed in the lever 28 which is rockably mounted on the bracket 57. This lever 28 carries a dog 29 which is rockably mounted thereon and adapted to engage the teeth 30 on the disc 31 which is rotatably mounted. Projecting outwardly from the disc 31 is an arm 32 carrying a contact 33 connected by the wire 34 to one side of the battery or source of electrical energy 35. A wire 36 connects the opposite side of the battery or source of electrical energy to one side of an electrically operated alarm 37, the other side of wire 38 to the contact 39 which is mounted on the bracket 40.

The construction is such that a person desiring to pass between the walls 11 and 12 would be forced to swing the closure outward- 1y, thus sliding the locking bar 19 because of the engagement of the dog 17 therewith. When this closure is swung outwardly so that sufficient clearance between the walls 8 and 13 is provided for a mans entry into the space defined by the walls 7 and 8, the wall 7 will which is connected by the be brought into engagement with the wall 13 as shown in Fig. 3. In order that the individual may enter the space defined by the walls 13, 1 1 and 15, the closure would be swung to its former position which is the position shown in Fig. 1, thus leaving the arcuate locking bar 19 in the position to which it had been moved by thedog 17, the dog 17 in the backward movement riding over the rachet teeth on the inner face of the bar 19. As one instance of construction, the device would be so arranged that this movement would effect a sliding of the bar 19 one-half of its length. Inorder to pass from I the space defined by the walls 13,14 and 15, the closure would again have to be swung into the position shown in Fig. 3, thus moving the bar 19 the remaining portion of its length so as to bring the shoulder 12 into engagement with the dog 41. plunger 58 would be pressed by the spring 59 into the slot 60 formed in the end of the bar 19 and thus lock the construction in this position so that passage therethrough could not be effected. The disc 31 would be rotated through two of its notches 30 and should the spring heldplunger 58 for any reasonfail to engage in the slot 60 or should the dog Q Lfor any reason fail to engage the shoulder i2, the closure could then be swung outwardly to the position shown in Fig. 3, but at the same time, the disc 31 would have been-rotated. At the same time, tated sufficient distance to bring the contact 33 into engagement with the contact 39 and thus sound the electric alarm 37 which might be positioned at any desired place. It is believed obvious that instead of the alarm 37 an electrically operated latch bolt or protective slide might be used.

The simplicity and durability of the structure is obvious, and it is believed that the utility of such a structure is apparent from the description given.

While I have illustrated and described the preferred form of construction of my invention, I do not wish to limit myself to the precise details of structure shown, but deslre to avail myself of such variations and modifications as may come within the scope of the appended claims.

c Having thus described my invention, what ll claim as new and desire to secure by Letters Patent is:

1. A device of the class described, comprising: a swingably mounted closure having spaced walls with a space therebetween sufficientforthe entry of a person thereinto;

' a cage forming structure positioned oppositely to said closure and closed at one side by one of the side walls of said closure upon swinging of said closure to one position, and at the opposite. side by the other wall of said closure upon swinging of said closure to closing position; and means for locking said clo-v At the same time, the

the disc 31 would have been ro-.

sure against swinging movement after swinging of the same to open position a predetermined number of times. t

2. A device of the class described, comprising: a swingable closure having spaced side walls; a cage forming structure positioned opposite said closure and closed at its opposite sides by the opposite walls of said closure upon swinging of the same to closed position; and movable means for looking said closure against swinging movement upon aswinging of the same to open and closedpositionsa predetermined number of times. p

3. A device of the'class described, comprising: a swingable closure having spaced side walls; a cage forming structure positioned opposite 'said closure and closed at its oppositesid-es by the opposite walls of said closure upon swinging'of the same to closed aosit-iong movable means for locking said closure against swinging movement upon a swinging of the same to open and closed po-. sitions a predetermined number of times and alarm means for sounding an alarm upon the swingingof said closure to open position in excess of said predetermined number of times. I

4-- A device of the class described, comprising: a swingable closure; a cage located in proximity with said closure in such a manner that the swinging of said closure to open position will permit entry into said cage and bar passage through said cage until the swinging of said closure to closed position; and means for lockin said closure against swingable movement after the swinging of said closure a predetermined number of times.

5. A device of the class described, comprising: a swingable closure; acage located in proximity with said closure in such a manner that the swinging of said closure to open position will permit entry into said cage and bar passage through said cageuntilthe swing ing of said closure to closed position; and means for'locking said closure against swingable movement after the swinging of said closure to closed position a predetermined number of times.

6. A device of the class described, comprising a movable closure; a cage forming structure associated with said closure and located in proximity thereto in such a manner that the movement of said closure to open position will permit entry into said cage structure and preventpassage therethrough until the subsequent movement of said closure to closing. posit-ion; and means for locking said closure against movement after the movement of the same a predetermined number of times.

In testimony whereof I have signed the foregoing specification.

VERNA E. DAVIDSON. 

